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melanosis

[ mel-uh-noh-sis ]

noun

, Pathology.
  1. abnormal deposition or development of black or dark pigment in the tissues.
  2. a discoloration caused by this.


melanosis

/ ˌmɛləˈnəʊsɪs; ˌmɛləˈnɒtɪk; ˈmɛləˌnɪzəm /

noun

  1. pathol a skin condition characterized by excessive deposits of melanin
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Derived Forms

  • melanotic, adjective
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Word History and Origins

Origin of melanosis1

First recorded in 1815–25; from New Latin, Late Greek melánōsis “a becoming black”; melan-, -osis
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Example Sentences

In chronic cases the eventual effects are anaemia, melanosis, enlargement of the spleen and liver, and general cachexia.

He is stated to have died of "melanosis of the lungs," a disease in which the whole substance of the lungs turns completely black.

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melanophoremelanosome